Mailbox support kit



FIG. 1 is an isometric view of a mailbox support kit showing my newdesign;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken line showing of the mailbox and post in FIG. 1 is forillustrative purposes only and forms no part of the claimed design.

The ornamental design for a mailbox support kit, as shown and described.